Rolling mill



C. J. VKLEIN ROLLING MILL Aug. 2%, 193i).

Filed Feb.

Patented Aug. 26, 193% umrao sTA Es' msaa PATENT OFFICE CLARENCE J. KLEIN, F BELLEV'UE, PENNSYLVANIA, ASSIGNOR TO UNITED ENGINEER- ING & FOUNDRY COMPANY, OF PITTSBURGH, PENNSYLVANIA, A. CORPORATION OF PENNSYLVANIA i ROLLING MILL Application filed February 28, 1925. Serial No. 343,253.

The present invention relates broadly to the art of metal rolling, and more particularly to an improved rolling mill structure embodying means for balancing the top rolls 6 of such mills.

The present invention also embodies an "improved mill structure such as to facilitate the changing of the rolls while permitting the maintenance of a predetermined mill adjustment.

It has heretofore been customary in the art to which the present invention relates to construct rolling mills having what is known as a balanced roll. The balancing means, as usually applied, has comprised a suitable arrangement of springs or of counter-balancing weights suitably connected to the roll to be balanced. The construction, however, has been such that in order to permit the removal of one of the rolls, or the changing of the rolls as is customary in the rolling mill art, it has been necessary not only to lose the adjustment of the balancing means, but to effect complete removal thereof.

In accordance with the present invention there is provided an improved construction such that a roll changing operation may take place without in any wise disturbing the balancing means for the balanced roll or the adjustment thereof.

In the accompanying drawings there is shown, for purposes of illustration only, a preferred embodiment of my invention. In the drawings, Figure 1 is an end elevational view, partly in section and partly broken away, of one form of mill embodying the present invention, and

Figure 2 is a partial side elevational view of the construction illustrated in Figure 1.

In carrying out the present invention, there may be provided the usual mill housing ncluding housing posts 2 having the usual window 3 therebetween for the'reception of bearings t and 5 for the rolls 6 and 7, respectively. I preferablyv provide the housing posts with window linings 8 adapted to cooperate with the roll bearings for maintaining them against lateral movement.

Suitably formed in each of the housing posts is a vertically extending recess 9 adapted to receive a supporting rod 10. Each of these rods is of such length as to project a considerable distance above the top of its housing post, and is threaded to receive a nut 11. The lower ends of the rods 10 are provided with book shaped projections 12 extending through suitable openings 14*. in the window linings in such manner as to engage and support the bearings 4 for the upper roll 6.

Cooperating with the housing posts are caps 15 which are of generally usual construction except for the fact that they are formed with openings 16 extending therethrough in such manner as to freely receive the rods 10 and the nuts 11 carried thereby. These caps may be held in position on the housings in any desired manner as, for example, by the use of tension members 17 and cooperating keys 18.

Surrounding each of the rods 10 is a compression spring 19, the degree of compression of which may be adjustably controlled by means of the nuts 11, whereby the desired counterbalancing effect can be transmitted to the bearing 4. Having once determined the counterbalancing action which is most desirable for a given rolling condition, the parts may be left in adjusted position and the cap 15 removed or replaced at will as may be required for the re-changing of one or both of the rolls.

The recesses 9 are preferably so formed in the housing posts as to lie in substantially the median vertical plane thereof, having regard to the front and rear faces of a given housing. In order to permit a roll bearing 5 to be removed Without removing the rods 10, the bearing is provided in each side thereof with a vertically extending channel 20, of such dimensions as to permit the free passage of the bearing over the hook shaped portions 12 of the counterbalancing rods. This permits either or both of the rolls to be changed at will while maintaining a given adjustment of the counterbalancing springs 19.

Many of the advantages of the improved construction herein disclosed arise by reason of the provision of a cap having openings therein of suflicient size to permit the free passage therethrough of the counterbalancing means, whereby the removal of the cap may be accomplished without disturbing such means. Other advantages reside in theprovision of a counterbalancing means including springs which are carried entirely independently of the housing caps and which bear at their lower ends directly against the upper ends of the housing posts, whereby the removal of the caps does not effect any predetermined adjustment of the springs.

- Still other advantages are obtained by reason of the location of the counterbalancing means adjacent the sides of the housing windows but protected by window liners, except for the hook shaped portions which pro'ect into the window in supporting relatio ip to a roll bearing, and the construction of the other bearings in such manner that they may move freely past such supporting projections.

While I have herein disclosed a preferred embodiment of my invention, it will be apparent to those skilled in the art that changes in the constructionand arrangement of the parts may be made without departing either from the spirit of my invention or the scope of my broader claims. It will also be apparent that, while I have illustrated the invention in connection with a two-high mill, it is equally adaptable to mills having a different number and arrangement of rolls.

I claim:

1. In a rolling mill, a housing including housing posts, rolls carried by said housing, and counterbalancing means for one of said rolls carried entirely by said housing osts, there being a cap for said housing reely movable relatively to said counterbalancing means.

2. A housing for rolling mills including housing posts, counterbalancing means movably mounted therein and provided with suprting portions projecting inwardly of the aces of said posts, and counterbalancing springs carried by said means and bearing directly against the tops of such posts, there being a cap structure cooperating with said posts and freely movable relatively to said counterbalancing means.

3. housing for rolling mills including housing posts, counterbalancing means movably mounted therein and provided with suporting portions projecting inwardly of t e faces of said posts, and counterbalancing springs carried by said means and bearing directly against the tops of such posts, there being a. cap structure cooperating with said posts and freely movable relatively to said counterbalancing means, and having openings for the free reception of said springs.

4. A housing for rolling mills, comprising housing posts forming a roll window, window liners cooperating therewith, counterbalancing means having portions projecting through said liners, and springs cooperating with said counterbalancing means an r- I my hand.

ing directly against the upper ends of said posts, there being a cap cooperating with said posts and free reception of said springs.

5. In a rolling mill, a housing, rolls carried thereby, a cap. for said housing, and counterbalancing means for one of said rolls supported independently of said cap, said means includin springs, and openings in said cap for the rec reception of said springs.

6. In a rolling mill, a housing including housing posts, rolls carried by said housing, counter-balancing means for one of said rolls carried entirely by and movably mounted in said housing posts, and means for protecting said counter-balancing means.

7. In a rolling mill,'a housing including housing posts, counter-balancing means movably mounted therein and provided with supporting portions projecting inwardly of the aces of said posts, means for protecting said counter-balancing means, and counter-balancing springs carried by said means and bearing directly on the tops of such posts.

8. A housing for rolling mills, comprising housing posts forming a roll window, window liners, counter-balancing means having portions projecting through said liners, the liners protectively and springs cooperating with said counterbalancing means and bearing directly against the upper ends of said posts.

9. In a rolling mill, a housing including a roll window, roll-supporting means out of the plane of and projecting laterally into said window, means for protecting the rollsu ilporting means, and a roll bearing having a c annel to receive said projections and permit the free passage of said bearings over the aforesaid projections.

' In testimony whereof I have hereunto set CLARENCE J. KLEIN.

provided with openings for the cooperating therewith, 

